<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="stylesheet" href="/static/css/common.css" />
    {% block css %}{% endblock %}
    <title>Document</title>
</head>
<body>
    <p>common</p>

    <!-- block占位符 -->
    {% block content %}{% endblock %}

    <script src="/static/js/common.js"></script>
    {% block js %}{% endblock %}
</body>
</html>